/*
 * Copyright (c) 2022-2025 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import * as arkts from '@koalaui/libarkts';
import { AbstractVisitor } from '../../common/abstract-visitor';

export class ReturnTransformer extends AbstractVisitor {
    private _types: arkts.TypeNode[] = [];

    reset(): void {
        super.reset();
        this._types = [];
    }

    visitor(beforeChildren: arkts.AstNode): arkts.AstNode {
        const node = this.visitEachChild(beforeChildren);
        if (arkts.isReturnStatement(node) && node.argument) {
            const type = arkts.createTypeNodeFromTsType(node.argument);
            if (!!type && arkts.isTypeNode(type)) {
                this._types.push(type);
            }
            return node;
        }
        return node;
    }

    get types(): arkts.TypeNode[] {
        return this._types;
    }
}
